chemistry vs atomistic theory

chemistry and atomistic theory both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemistry	Yes	No	No	No
atomistic theory	Yes	No	No	No

chemistry (noun)	atomistic theory (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions	(chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles
the way two individuals relate to each other
the chemical composition and properties of a substance or object